brokerd: memory calls to memoryd with the session's state; labels only stricter

Implemented-By: OpenCode session (model recorded in docs/implementer-log.md)

crates/brokerd/src/config.rs

@@ -53,6 +53,14 @@ pub struct Gateway {
     pub socket: PathBuf,
 }
 
+/// `[memory]`: where `memoryd` takes the decided `recall` and `memory` calls. The memory tools are
+/// always on, so the section is optional; an empty path means the default under `home`.
+#[derive(Debug, Clone, PartialEq, Eq, Deserialize, Default)]
+#[serde(deny_unknown_fields, default)]
+pub struct Memory {
+    pub socket: PathBuf,
+}
+
 fn default_podman() -> PathBuf {
     PathBuf::from("podman")
 }
@@ -141,6 +149,8 @@ pub struct Config {
     pub runner: Option<Runner>,
     #[serde(default)]
     pub gateway: Option<Gateway>,
+    #[serde(default)]
+    pub memory: Memory,
 }
 
 /// The longest an approval may wait: a day, the longest `loopd` waits after a pending frame.
@@ -283,6 +293,14 @@ impl Config {
             Some(gateway.socket.clone())
         }
     }
+    /// `memoryd`'s socket for `brokerd`.
+    pub fn memory_socket(&self) -> PathBuf {
+        if self.memory.socket.as_os_str().is_empty() {
+            self.paths.home.join("run/broker-memory/memory.sock")
+        } else {
+            self.memory.socket.clone()
+        }
+    }
     pub fn audit_dir(&self) -> PathBuf {
         self.paths.home.join("audit")
     }